Which switch on the AFCS panel is used to clear an intermittent malfunction?

Which switch on the AFCS panel is used to clear an intermittent malfunction?

• A. FAILURE RESET CPTR 2
• B. FAILURE RESET CPTR 1
• C. INTERMITTENT CLEAR
• D. RESET AFCS

Answer: (A)

Resetting the control processor that has latched the fault is how you clear an intermittent AFCS malfunction. The UH-60 AFCS uses two control processors (CPTRs); when an intermittent fault shows up, its fault flag is stored in the processor. Using the switch labeled Failure Reset CPTR 2 clears that fault latch and reinitializes the second processor, allowing the AFCS to return to normal operation if no new fault is detected. This targeted reset is preferred because it refreshes the AFCS logic path associated with intermittents without performing a full system reset that would affect other AFCS functions. The other options either perform a broader system reset or correspond to a different function, which is not the standard method for clearing an intermittent fault in this panel. After the reset, monitor for reoccurrence of the fault and proceed with normal flight if the system comes back clean.

Resetting the control processor that has latched the fault is how you clear an intermittent AFCS malfunction. The UH-60 AFCS uses two control processors (CPTRs); when an intermittent fault shows up, its fault flag is stored in the processor. Using the switch labeled Failure Reset CPTR 2 clears that fault latch and reinitializes the second processor, allowing the AFCS to return to normal operation if no new fault is detected. This targeted reset is preferred because it refreshes the AFCS logic path associated with intermittents without performing a full system reset that would affect other AFCS functions. The other options either perform a broader system reset or correspond to a different function, which is not the standard method for clearing an intermittent fault in this panel. After the reset, monitor for reoccurrence of the fault and proceed with normal flight if the system comes back clean.